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…nto pos_client # Conflicts: # ReadMe.md # buildSrc/src/main/kotlin/Versions.kt # gradle/libs.versions.toml
…nto pos_client # Conflicts: # buildSrc/settings.gradle.kts # buildSrc/src/main/kotlin/Versions.kt
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Claude finished @jakubuid's task in 1m 49s —— View job Code Review CompleteReviewed POS SDK implementation for code quality, security, and best practices. Tasks
Issues FoundIssue 1: Missing HTTP Response Status Code ValidationFile: product/pos/src/main/kotlin/com/walletconnect/pos/api/ApiClient.kt:198-200
httpClient.newCall(httpRequest).execute().use { response ->
HttpResponse.Success(response.body.string())
}Issue: Server errors (500), auth failures (401/403), not found (404) all treated as success with potentially malformed response bodies parsed as valid JSON. Fix needed: Validate if (!response.isSuccessful) {
HttpResponse.Error("HTTP_${response.code}", response.message)
}Issue 2: Thread-Safety Violation in SingletonFile: product/pos/src/main/kotlin/com/walletconnect/pos/PosClient.kt:17-21
object PosClient {
private var delegate: POSDelegate? = null // Mutable shared state
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRisk: Race conditions between
Fix needed: Use Issue 3: Infinite Polling Loop with No Circuit BreakerFile: product/pos/src/main/kotlin/com/walletconnect/pos/api/ApiClient.kt:119-145 Polling loop has no maximum retry limit or exponential backoff. On persistent non-terminal errors, it polls indefinitely. while (true) {
delay(pollDelayMs)
when (val result = getPayment(paymentId)) {
is ApiResult.Error -> {
if (isTerminalError(result.code) || result.code == "NETWORK_ERROR") {
break
}
// Continues polling forever on non-terminal errors
}
}
}Risk:
Fix needed: Add max retry count (e.g., 50 attempts) and exponential backoff with jitter. Issue 4: URL Injection Vulnerability via paymentIdFile: product/pos/src/main/kotlin/com/walletconnect/pos/api/Mapping.kt:49-51
internal fun buildPaymentUri(paymentId: String): String {
return "https://walletconnect.com/pay/$paymentId"
}Risk: If Fix needed: Validate return URI("https://walletconnect.com/pay/").resolve(paymentId).toString()Issue 5: Sensitive API Key Logged in HeadersFile: product/pos/src/main/kotlin/com/walletconnect/pos/api/ApiClient.kt:188-192 API key transmitted in plaintext header .addHeader("X-Api-Key", apiKey)Risk: API keys in crash reports, logcat, or debug builds compromise security. Recommendation: Document that API key logging must be disabled in production, or implement request/response interceptor to redact sensitive headers. Issue 6: Missing Input Validation for AmountFile: product/pos/src/main/kotlin/com/walletconnect/pos/PosClient.kt:56
Risk: Garbage values like Fix needed: Validate before API call: require(amount.value.toLongOrNull()?.let { it > 0 } == true) { "Amount must be positive number" }
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) { "Invalid currency unit" }Issue 7: TODO Comment in Production CodeFile: product/pos/src/main/kotlin/com/walletconnect/pos/api/Mapping.kt:27 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Action needed: Remove TODO or implement proper error message passing from backend. Issue 8: Insufficient Test Coverage for ApiClientFiles: product/pos/src/test/kotlin/com/walletconnect/pos/ Only 2 test files exist (POSClientTest.kt, MappingTest.kt). No tests for:
Recommendation: Add unit tests with mocked HTTP client for ApiClient covering error paths and edge cases. Issue 9: Missing Timeout Configuration DocumentationFile: product/pos/src/main/kotlin/com/walletconnect/pos/api/ApiClient.kt:25-28 HTTP client has 15-second timeouts for all operations: .connectTimeout(15, TimeUnit.SECONDS)
.readTimeout(15, TimeUnit.SECONDS)
.writeTimeout(15, TimeUnit.SECONDS)Issue: No documentation about timeout behavior. Long-polling endpoints may fail unexpectedly. Timeout not configurable by SDK users. Recommendation: Document timeout policy or expose as init parameter for different network conditions. Issue 10: Package Namespace InconsistencyFiles: product/pos/src/main/kotlin/ Main SDK uses File: product/pos/build.gradle.kts:12 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"Issue: Inconsistent with repository rebranding from WalletConnect to Reown. May cause confusion for users. Recommendation: Align package naming with repository standard (com.reown). SummaryFound 10 issues requiring attention:
Most critical: HTTP response validation (Issue 1) should be fixed before release to prevent parsing errors from being treated as successful responses. |
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Claude finished @jakubuid's task in 2m 28s —— View job 🔄 Incremental Review: Changes Since Last Review SummaryVerified all 10 previously reported issues. All issues remain unresolved in the current code state. Additionally, comprehensive test coverage has been added since the last review (ApiClientTest.kt with 350 lines), which partially addresses Issue 8. Previously Reported Issues - Current StatusIssue 1: Missing HTTP Response Status Code ValidationID: apiclient-http-status-validation-a7f2
httpClient.newCall(httpRequest).execute().use { response ->
HttpResponse.Success(response.body.string())
}Server errors (500), auth failures (401/403), not found (404) all treated as success with potentially malformed response bodies parsed as valid JSON. Recommendation: Validate HTTP status before treating as success: httpClient.newCall(httpRequest).execute().use { response ->
if (!response.isSuccessful) {
return HttpResponse.Error("HTTP_${response.code}", response.message)
}
HttpResponse.Success(response.body.string())
}Issue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d
object PosClient {
private var delegate: POSDelegate? = null // Mutable shared state
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRisk: Race conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullOr add synchronized blocks around critical sections. Issue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop has no maximum retry limit or exponential backoff. The loop uses while (true) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
onEvent(mapErrorCodeToPaymentError(result.code, result.message))
if (isTerminalError(result.code) || result.code == "NETWORK_ERROR") {
break
}
// Non-terminal errors continue polling indefinitely with no delay
}
}
}Risk: Network flakiness or server rate limiting causes infinite polling without backoff, leading to battery drain and resource exhaustion. Recommendation: Add max retry count and exponential backoff: var retryCount = 0
val maxRetries = 50
while (retryCount < maxRetries) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
retryCount++
if (isTerminalError(result.code) || result.code == "NETWORK_ERROR") {
break
}
delay(min(1000L * (2.0.pow(retryCount)), 30000L).toLong()) // Exponential backoff capped at 30s
}
is ApiResult.Success -> retryCount = 0 // Reset on success
}
}Issue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
checkInitialized()
currentPollingJob?.cancel()
currentPollingJob = scope?.launch {
apiClient!!.createPayment(referenceId, amount.unit, amount.value) { event ->Risk: Garbage values like Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toBigDecimalOrNull()?.let { it > BigDecimal.ZERO } == true) {
"Amount value must be positive number"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?TODO comment indicates incomplete error handling implementation. Recommendation: Remove TODO or implement proper error message passing from backend response. Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 Main SDK uses extra[KEY_PUBLISH_GROUP] = "com.walletconnect"Sample app uses Recommendation: Align package naming with repository standard (com.reown) for consistency. Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key transmitted in plaintext header .addHeader("X-Api-Key", apiKey)Risk: If HTTP logging enabled in OkHttp, API keys leak to logs, crash reports, or logcat. Recommendation: Document that API key logging must be disabled in production, or implement request/response interceptor to redact sensitive headers in logs. Issue 8: Insufficient Test Coverage for ApiClientFile: product/pos/src/test/kotlin/com/walletconnect/pos/ Progress: Comprehensive
Still Missing:
Issue 9: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 HTTP client has hardcoded 15-second timeouts: private val httpClient = OkHttpClient.Builder()
.connectTimeout(15, TimeUnit.SECONDS)
.readTimeout(15, TimeUnit.SECONDS)
.writeTimeout(15, TimeUnit.SECONDS)
.build()No documentation about timeout behavior. Timeout not configurable by SDK users. Recommendation: Document timeout policy in KDoc or expose as init parameter for different network conditions. Issue 10: URL Injection Vulnerability via paymentIdID: mapping-url-injection-a3c9 The Automated Checks✅ No GitHub Actions workflow files modified New Issues FoundNo new issues identified in latest commits beyond the 8 unresolved issues from previous review. Incremental SummaryStatus: 8 of 10 originally reported issues remain unresolved. Test coverage significantly improved but still gaps due to unresolved architectural issues (HTTP status validation, polling circuit breaker). Critical priorities for next iteration:
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![github-actions[bot]](https://avatars.githubusercontent.com/in/15368?s=60&v=4){kind=small}
| .build() | ||
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| return try { | ||
| httpClient.newCall(httpRequest).execute().use { response -> |
There was a problem hiding this comment.
🤖 Auto Review Issue: Missing HTTP Response Status Code Validation
Severity: HIGH
Category: code_issue
Tool: Claude Auto Review
Recommendation: Validate HTTP status before treating as success:
httpClient.newCall(httpRequest).execute().use { response ->
if (!response.isSuccessful) {
return HttpResponse.Error("HTTP_${response.code}", response.message)
}
HttpResponse.Success(response.body.string())
}| private fun executeHttpRequest(jsonBody: String): HttpResponse { | ||
| val httpRequest = Request.Builder() | ||
| .url(coreUrl) | ||
| .addHeader("X-Api-Key", apiKey) |
There was a problem hiding this comment.
🤖 Auto Review Issue: Sensitive API Key Logged in Headers
Severity: MEDIUM
Category: code_issue
Tool: Claude Auto Review
Recommendation: Document that API key logging must be disabled in production, or implement request/response interceptor to redact sensitive headers in logs.
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Claude finished @jakubuid's task in 2m 36s —— View job 🔄 Incremental Review: Changes Since Last Review SummaryReviewed recent commits (022f91c, 762004d, fcb6984). Latest changes include adding merchantId parameter, switching to REST API, adding gateway URL to response, and updating polling logic. 8 previously reported issues remain unresolved. No new critical issues found in latest commits. Previously Reported Issues - Current StatusIssue 1: Missing HTTP Response Status Code ValidationID: apiclient-http-status-validation-a7f2
Issue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d PosClient singleton has unsynchronized mutable state: object PosClient {
private var delegate: POSDelegate? = null
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRace conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullIssue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop relies entirely on server's while (true) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Success -> {
if (data.pollInMs == 0L) {
break
}
delay(data.pollInMs)
}
is ApiResult.Error -> {
onEvent(mapErrorCodeToPaymentError(result.code, result.message))
if (isTerminalError(result.code) || result.code == ErrorCodes.NETWORK_ERROR) {
break
}
}
}
}Risk: Non-terminal errors cause indefinite polling. Server misconfiguration (never sending pollInMs=0) causes infinite loop. Recommendation: Add max retry count and elapsed time limit: var retryCount = 0
val maxRetries = 100
val startTime = System.currentTimeMillis()
val maxDuration = 3600_000L // 1 hour
while (retryCount < maxRetries && System.currentTimeMillis() - startTime < maxDuration) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
retryCount++
// ...
}
is ApiResult.Success -> retryCount = 0
}
}Issue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
checkInitialized()
currentPollingJob?.cancel()
currentPollingJob = scope?.launch {
apiClient!!.createPayment(referenceId, amount.unit, amount.value) { event ->Risk: Invalid values like Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toLongOrNull()?.let { it > 0 } == true) {
"Amount value must be positive integer"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"SDK uses Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key, merchant ID, and device ID transmitted in headers without logging protection: .addHeader("X-Api-Key", apiKey)
.addHeader("X-Merchant-Id", merchantId)
.addHeader("X-Device-Id", deviceId)Recommendation: Document that HTTP logging must be disabled in production, or add interceptor to redact sensitive headers in debug logs. Issue 8: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 Hardcoded 15-second timeouts without documentation or configurability: private val httpClient = OkHttpClient.Builder()
.connectTimeout(15, TimeUnit.SECONDS)
.readTimeout(15, TimeUnit.SECONDS)
.writeTimeout(15, TimeUnit.SECONDS)New Issues FoundIssue 9: TODO Comment in Polling LogicID: apiclient-todo-isfinal-b2c4 //TODO: use isFinal to stop pollingIndicates incomplete implementation - polling should respect Issue 10: Potential NumberFormatException in Amount.format()ID: pos-amount-format-crash-7e9f fun format(): String {
val currency = unit.substringAfter("/", "")
val majorUnits = (value.toLongOrNull() ?: 0L) / 100.0
return String.format("%.2f %s", majorUnits, currency)
}Silently returns "0.00" for invalid values instead of validation failure. If Recommendation: Fail fast on invalid values in Amount construction or validate in format(): fun format(): String {
val currency = unit.substringAfter("/", "")
val amount = value.toLongOrNull() ?: throw IllegalStateException("Invalid amount value: $value")
val majorUnits = amount / 100.0
return String.format("%.2f %s", majorUnits, currency)
}Automated Checks✅ No external domain URLs detected (pay.walletconnect.org is approved) Test Coverage Status✅ Comprehensive test coverage added since last review:
SummaryStatus: 8 of 10 originally reported issues remain unresolved. 2 new issues identified in latest commits (TODO comment, amount formatting). Critical priorities:
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| while (true) { | ||
| when (val result = getPaymentStatus(paymentId)) { | ||
| //TODO: use isFinal to stop polling |
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🤖 Auto Review Issue: TODO Comment in Polling Logic
Severity: LOW
Category: code_quality
Tool: Claude Auto Review
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Claude finished @jakubuid's task in 2m 30s —— View job 🔄 Incremental Review: Changes Since Last Review SummaryReviewed latest commits (bf76a17, 022f91c, 762004d). Issue 1 (HTTP status validation) has been RESOLVED. Modified API client now uses Retrofit with proper HTTP response handling. 7 previously reported issues remain unresolved. 3 new issues identified. Previously Reported Issues - Status UpdateIssue 1: Missing HTTP Response Status Code ValidationID: apiclient-http-status-validation-a7f2 ApiClient now uses Retrofit which properly validates HTTP responses via Issue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d PosClient singleton has unsynchronized mutable state without thread-safety guarantees: object PosClient {
private var delegate: POSDelegate? = null
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRace conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullIssue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop relies entirely on server's while (true) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Success -> {
if (data.isFinal || data.pollInMs == null) {
break
}
delay(data.pollInMs)
}
is ApiResult.Error -> {
if (isTerminalError(result.code) || result.code == ErrorCodes.NETWORK_ERROR) {
break
}
// Non-terminal errors continue indefinitely
}
}
}Risk: Non-terminal errors or server misconfiguration cause indefinite polling, battery drain, resource exhaustion. Recommendation: Add max retry count and elapsed time limit: var retryCount = 0
val maxRetries = 100
val startTime = System.currentTimeMillis()
val maxDuration = 3600_000L // 1 hour
while (retryCount < maxRetries && System.currentTimeMillis() - startTime < maxDuration) {
// existing logic
}Issue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toLongOrNull()?.let { it > 0 } == true) {
"Amount value must be positive integer"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"SDK uses Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key and merchant ID transmitted in headers without logging protection: .addHeader("Api-Key", apiKey)
.addHeader("Merchant-Id", merchantId)Debug builds enable HTTP body logging (line 37-38), exposing sensitive headers in logs. Recommendation: Document HTTP logging must be disabled in production, or add interceptor to redact sensitive headers. Issue 8: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 Hardcoded 30-second timeouts without documentation or configurability: .connectTimeout(30, TimeUnit.SECONDS)
.readTimeout(30, TimeUnit.SECONDS)
.writeTimeout(30, TimeUnit.SECONDS)Issue 9: Potential NumberFormatException in Amount.format()ID: pos-amount-format-crash-7e9f Silently returns "0.00" for invalid values: val majorUnits = (value.toLongOrNull() ?: 0L) / 100.0Invalid data displays incorrect amount to user instead of failing fast. Recommendation: fun format(): String {
val currency = unit.substringAfter("/", "")
val amount = value.toLongOrNull() ?: throw IllegalStateException("Invalid amount value: $value")
val majorUnits = amount / 100.0
return String.format("%.2f %s", majorUnits, currency)
}Issue 10: TODO Comment RemovedID: apiclient-todo-isfinal-b2c4 Polling logic now properly uses New Issues FoundIssue 11: Hardcoded Staging URL in Production CodeID: apiclient-staging-url-b9d4 Staging AWS ELB URL hardcoded as default API base: buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core-541528872.eu-central-1.elb.amazonaws.com\"") //TODO: change to prodRisk: Production builds will connect to staging environment, causing payment failures and data inconsistency. Recommendation: Use production URL or fail build if not configured: buildConfigField(type = "String", name = "CORE_API_BASE_URL",
value = "\"https://pay.walletconnect.com\"")Issue 12: Hardcoded Sandbox URL ReplacementID: apiclient-sandbox-replace-c7f3 Gateway URL unconditionally modified to sandbox domain: // TODO: Remove this when the API returns the correct sandbox URL
private fun String.toSandboxUrl(): String {
return replace("://pay.walletconnect.com", "://sandbox.pay.walletconnect.com")
}Used in line 75: Risk: Production payments redirected to sandbox, breaking payment flow. Recommendation: Remove hardcoded replacement. Backend should return correct URL based on environment. Issue 13: Insecure HTTP Protocol in Base URLID: apiclient-http-protocol-e8a2 Base URL uses HTTP instead of HTTPS: buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core...\"")Risk: API key, merchant ID, and payment data transmitted unencrypted. Man-in-the-middle attacks can intercept sensitive information. Recommendation: Use HTTPS for all API communication. Automated Checks✅ No external domain URLs detected (pay.walletconnect.org, walletconnect.com are approved) SummaryStatus: 2 of 10 originally reported issues resolved. 7 issues remain unresolved. 3 new critical issues identified in latest commits. Critical priorities:
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product/pos/build.gradle.kts
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| buildConfigField(type = "String", name = "SDK_VERSION", value = "\"${requireNotNull(extra.get(KEY_PUBLISH_VERSION))}\"") | ||
| buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core-541528872.eu-central-1.elb.amazonaws.com\"") //TODO: change to prod |
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🤖 Auto Review Issue: Hardcoded Staging URL in Production Code
Severity: HIGH
Category: configuration
Tool: Claude Auto Review
Recommendation: Use production URL or fail build if not configured:
buildConfigField(type = "String", name = "CORE_API_BASE_URL",
value = "\"https://pay.walletconnect.com\"")| } | ||
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| // TODO: Remove this when the API returns the correct sandbox URL | ||
| private fun String.toSandboxUrl(): String { |
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🤖 Auto Review Issue: Hardcoded Sandbox URL Replacement
Severity: MEDIUM
Category: code_quality
Tool: Claude Auto Review
Recommendation: Remove hardcoded replacement. Backend should return correct URL based on environment.
product/pos/build.gradle.kts
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| buildConfigField(type = "String", name = "SDK_VERSION", value = "\"${requireNotNull(extra.get(KEY_PUBLISH_VERSION))}\"") | ||
| buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core-541528872.eu-central-1.elb.amazonaws.com\"") //TODO: change to prod |
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🤖 Auto Review Issue: Insecure HTTP Protocol in Base URL
Severity: HIGH
Category: security
Tool: Claude Auto Review
Recommendation: Use HTTPS for all API communication.
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Claude finished @jakubuid's task in 1m 52s —— View job 🔄 Incremental Review: Changes Since Last Review SummaryReviewed latest commit (8e74939) which changes sample app package from Previously Reported Issues - Current StatusIssue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d PosClient singleton has unsynchronized mutable state: object PosClient {
private var delegate: POSDelegate? = null
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRace conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullIssue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop relies entirely on server's while (true) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
if (isTerminalError(result.code) || result.code == ErrorCodes.NETWORK_ERROR) {
break
}
// Non-terminal errors continue indefinitely
}
}
}Risk: Non-terminal errors or server misconfiguration cause indefinite polling, battery drain, resource exhaustion. Recommendation: Add max retry count and elapsed time limit: var retryCount = 0
val maxRetries = 100
val startTime = System.currentTimeMillis()
val maxDuration = 3600_000L // 1 hour
while (retryCount < maxRetries && System.currentTimeMillis() - startTime < maxDuration) {
// existing logic
}Issue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toLongOrNull()?.let { it > 0 } == true) {
"Amount value must be positive integer"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"Note: Latest commit worsens this issue by changing sample app package from Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key and merchant ID transmitted in headers. Debug builds enable HTTP body logging (line 37-38), exposing sensitive headers in logs. .addHeader("Api-Key", apiKey)
.addHeader("Merchant-Id", merchantId)Recommendation: Document HTTP logging must be disabled in production, or add interceptor to redact sensitive headers. Issue 8: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 Hardcoded 30-second timeouts without documentation or configurability: .connectTimeout(30, TimeUnit.SECONDS)
.readTimeout(30, TimeUnit.SECONDS)
.writeTimeout(30, TimeUnit.SECONDS)Issue 9: Potential NumberFormatException in Amount.format()ID: pos-amount-format-crash-7e9f Silently returns "0.00" for invalid values instead of failing fast: val majorUnits = (value.toLongOrNull() ?: 0L) / 100.0Recommendation: fun format(): String {
val currency = unit.substringAfter("/", "")
val amount = value.toLongOrNull() ?: throw IllegalStateException("Invalid amount value: $value")
val majorUnits = amount / 100.0
return String.format("%.2f %s", majorUnits, currency)
}Previously Resolved IssuesIssue 1: Missing HTTP Response Status Code ValidationID: apiclient-http-status-validation-a7f2 ApiClient now uses Retrofit with proper HTTP response handling via Issue 10: TODO Comment RemovedID: apiclient-todo-isfinal-b2c4 Polling logic now properly uses New Issues FoundIssue 11: Hardcoded Staging URL in Production CodeID: pos-staging-url-b9d4 Staging AWS ELB URL hardcoded as default API base: buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core-541528872.eu-central-1.elb.amazonaws.com\"") //TODO: change to prodRisk: Production builds will connect to staging environment, causing payment failures. Recommendation: Use production URL: buildConfigField(type = "String", name = "CORE_API_BASE_URL",
value = "\"https://pay.walletconnect.com\"")Issue 12: Hardcoded Sandbox URL ReplacementID: apiclient-sandbox-replace-c7f3 Gateway URL unconditionally modified to sandbox domain: // TODO: Remove this when the API returns the correct sandbox URL
private fun String.toSandboxUrl(): String {
return replace("://pay.walletconnect.com", "://sandbox.pay.walletconnect.com")
}Used in line 75: Risk: Production payments redirected to sandbox, breaking payment flow. Recommendation: Remove hardcoded replacement. Backend should return correct URL based on environment. Issue 13: Insecure HTTP Protocol in Base URLID: apiclient-http-protocol-e8a2 Base URL uses HTTP instead of HTTPS: buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core...\"")Risk: API key, merchant ID, and payment data transmitted unencrypted. Man-in-the-middle attacks can intercept sensitive information. Recommendation: Use HTTPS: buildConfigField(type = "String", name = "CORE_API_BASE_URL",
value = "\"https://pay.walletconnect.com\"")Automated Checks✅ No external domain URLs detected (pay.walletconnect.org, walletconnect.com are approved) SummaryStatus: 2 of 10 originally reported issues resolved. 8 issues remain unresolved. 3 critical issues identified in previous reviews (Issues 11-13) still present. Critical priorities:
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product/pos/build.gradle.kts
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| buildConfigField(type = "String", name = "SDK_VERSION", value = "\"${requireNotNull(extra.get(KEY_PUBLISH_VERSION))}\"") | ||
| buildConfigField(type = "String", name = "CORE_API_BASE_URL", value = "\"http://wc-eu-central-1-staging-pay-core-541528872.eu-central-1.elb.amazonaws.com\"") //TODO: change to prod |
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🤖 Auto Review Issue: Hardcoded Staging URL in Production Code
Severity: HIGH
Category: configuration
Tool: Claude Auto Review
Recommendation: Use production URL:
buildConfigField(type = "String", name = "CORE_API_BASE_URL",
value = "\"https://pay.walletconnect.com\"")
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Claude finished @jakubuid's task in 1m 49s —— View job Incremental Review: Latest ChangesTasks
🔄 Incremental Review: Changes Since Last Review SummaryReviewed latest commit (af05d3e - "update api endpoint"). 3 critical issues RESOLVED (staging URL, insecure HTTP, sandbox URL replacement). 5 previously reported issues remain unresolved. No new issues found. Previously Resolved IssuesIssue 11: Hardcoded Staging URL in Production CodeID: pos-staging-url-b9d4 Base URL changed from staging AWS ELB to production HTTPS endpoint: // Before: "http://wc-eu-central-1-staging-pay-core-541528872.eu-central-1.elb.amazonaws.com"
// After: "https://api.pay.walletconnect.com"Issue 13: Insecure HTTP Protocol in Base URLID: apiclient-http-protocol-e8a2 Base URL now uses HTTPS protocol. network_security_config.xml (which allowed cleartext HTTP traffic) has been removed. Issue 12: Hardcoded Sandbox URL ReplacementID: apiclient-sandbox-replace-c7f3 The Previously Reported Issues - Still PresentIssue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d PosClient singleton has unsynchronized mutable state without thread-safety guarantees: object PosClient {
private var delegate: POSDelegate? = null
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRace conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullIssue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop relies entirely on server's while (true) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
if (isTerminalError(result.code) || result.code == ErrorCodes.NETWORK_ERROR) {
break
}
// Non-terminal errors continue indefinitely with no delay
}
}
}Network flakiness or server misconfiguration cause indefinite polling, battery drain, resource exhaustion. Recommendation: Add max retry count and elapsed time limit: var retryCount = 0
val maxRetries = 100
val startTime = System.currentTimeMillis()
val maxDuration = 3600_000L // 1 hour
while (retryCount < maxRetries && System.currentTimeMillis() - startTime < maxDuration) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
retryCount++
// existing logic
}
is ApiResult.Success -> retryCount = 0
}
}Issue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toLongOrNull()?.let { it > 0 } == true) {
"Amount value must be positive integer"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"SDK uses Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key and merchant ID transmitted in headers. Debug builds enable HTTP body logging (line 37-38), exposing sensitive headers in logs. .addHeader("Api-Key", apiKey)
.addHeader("Merchant-Id", merchantId)Document HTTP logging must be disabled in production, or add interceptor to redact sensitive headers. Issue 8: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 Hardcoded 30-second timeouts without documentation or configurability. Issue 9: Potential NumberFormatException in Amount.format()ID: pos-amount-format-crash-7e9f Silently returns "0.00" for invalid values instead of failing fast: val majorUnits = (value.toLongOrNull() ?: 0L) / 100.0Recommendation: fun format(): String {
val currency = unit.substringAfter("/", "")
val amount = value.toLongOrNull() ?: throw IllegalStateException("Invalid amount value: $value")
val majorUnits = amount / 100.0
return String.format("%.2f %s", majorUnits, currency)
}Automated Checks✅ No GitHub Actions workflow files modified SummaryStatus: 3 critical issues resolved in latest commit. 8 issues remain unresolved (5 medium, 3 low severity). Critical priorities:
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Claude finished @jakubuid's task in 2m 25s —— View job Incremental Review: Latest ChangesTasks
🔄 Incremental Review: Changes Since Last Review SummaryReviewed latest commit (60d8c25 - "fix test"). This commit removes a single assertion from a test file outside the POS SDK. All 8 previously reported issues remain unresolved in the POS SDK code. No new issues found in this commit. Previously Reported Issues - Current StatusIssue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d PosClient singleton has unsynchronized mutable state without thread-safety guarantees: object PosClient {
private var delegate: POSDelegate? = null
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRace conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullIssue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop relies entirely on server's while (true) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
if (isTerminalError(result.code) || result.code == ErrorCodes.NETWORK_ERROR) {
break
}
// Non-terminal errors continue indefinitely with no delay
}
}
}Network flakiness or server misconfiguration cause indefinite polling, battery drain, resource exhaustion. Recommendation: Add max retry count and elapsed time limit: var retryCount = 0
val maxRetries = 100
val startTime = System.currentTimeMillis()
val maxDuration = 3600_000L // 1 hour
while (retryCount < maxRetries && System.currentTimeMillis() - startTime < maxDuration) {
when (val result = getPaymentStatus(paymentId)) {
is ApiResult.Error -> {
retryCount++
// existing logic
}
is ApiResult.Success -> retryCount = 0
}
}Issue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toLongOrNull()?.let { it > 0 } == true) {
"Amount value must be positive integer"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"SDK uses Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key and merchant ID transmitted in headers. Debug builds enable HTTP body logging (line 37-38), exposing sensitive headers in logs. .addHeader("Api-Key", apiKey)
.addHeader("Merchant-Id", merchantId)Document HTTP logging must be disabled in production, or add interceptor to redact sensitive headers. Issue 8: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 Hardcoded 30-second timeouts without documentation or configurability. Issue 9: Potential NumberFormatException in Amount.format()ID: pos-amount-format-crash-7e9f Silently returns "0.00" for invalid values instead of failing fast: val majorUnits = (value.toLongOrNull() ?: 0L) / 100.0Recommendation: fun format(): String {
val currency = unit.substringAfter("/", "")
val amount = value.toLongOrNull() ?: throw IllegalStateException("Invalid amount value: $value")
val majorUnits = amount / 100.0
return String.format("%.2f %s", majorUnits, currency)
}Previously Resolved IssuesIssue 1: Missing HTTP Response Status Code ValidationID: apiclient-http-status-validation-a7f2 ApiClient now uses Retrofit with proper HTTP response handling via Issue 10: TODO Comment RemovedID: apiclient-todo-isfinal-b2c4 Polling logic now properly uses Issue 11: Hardcoded Staging URL in Production CodeID: pos-staging-url-b9d4 Base URL changed from staging to production HTTPS endpoint: Issue 12: Hardcoded Sandbox URL ReplacementID: apiclient-sandbox-replace-c7f3 The Issue 13: Insecure HTTP Protocol in Base URLID: apiclient-http-protocol-e8a2 Base URL now uses HTTPS protocol. network_security_config.xml removed. Automated Checks✅ No GitHub Actions workflow files modified SummaryStatus: 5 of 13 originally reported issues resolved. 8 issues remain unresolved (4 medium, 4 low severity). Critical priorities:
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Claude finished @jakubuid's task in 1m 48s —— View job Incremental Review: Latest ChangesTasks
🔄 Incremental Review: Changes Since Last Review SummaryReviewed latest commit (5450624 - "PR comments"). 2 previously reported issues RESOLVED (infinite polling, amount formatting). 6 issues remain unresolved. No new issues found in latest changes. Previously Resolved IssuesIssue 3: Infinite Polling Loop with No Circuit BreakerID: apiclient-infinite-polling-9b4e Polling loop now breaks on ANY error (ApiClient.kt:119-122). The Issue 9: Potential NumberFormatException in Amount.format()ID: pos-amount-format-crash-7e9f Amount.format() now throws IllegalStateException for invalid values instead of silently returning "0.00" (Pos.kt:14). Test updated to expect exception. Previously Reported Issues - Still PresentIssue 2: Thread-Safety Violation in SingletonID: posclient-thread-safety-8c3d PosClient singleton has unsynchronized mutable state without thread-safety guarantees: object PosClient {
private var delegate: POSDelegate? = null
private var apiClient: ApiClient? = null
private var scope: CoroutineScope? = null
private var currentPollingJob: Job? = nullRace conditions between Recommendation: Use @Volatile private var delegate: POSDelegate? = null
@Volatile private var apiClient: ApiClient? = null
@Volatile private var scope: CoroutineScope? = null
@Volatile private var currentPollingJob: Job? = nullIssue 4: Missing Input Validation for AmountID: posclient-amount-validation-c2f1
Recommendation: Validate before API call: fun createPaymentIntent(amount: Pos.Amount, referenceId: String) {
require(amount.value.toLongOrNull()?.let { it > 0 } == true) {
"Amount value must be positive integer"
}
require(amount.unit.matches(Regex("iso4217/[A-Z]{3}"))) {
"Invalid currency unit format, expected 'iso4217/XXX'"
}
checkInitialized()
// ...
}Issue 5: TODO Comment in Production CodeID: mapping-todo-comment-d4a8 PaymentStatus.FAILED -> Pos.PaymentEvent.PaymentError.PaymentFailed("Payment failed") //TODO: add error message?Issue 6: Package Namespace InconsistencyID: pos-package-naming-e5b3 extra[KEY_PUBLISH_GROUP] = "com.walletconnect"SDK uses Issue 7: Sensitive API Key Logged in HeadersID: apiclient-api-key-logging-f9c7 API key and merchant ID transmitted in headers. Debug builds enable HTTP body logging (line 37-38), exposing sensitive headers in logs. .addHeader("Api-Key", apiKey)
.addHeader("Merchant-Id", merchantId)Recommendation: Document HTTP logging must be disabled in production, or add interceptor to redact sensitive headers in debug logs. Issue 8: Missing Timeout Configuration DocumentationID: apiclient-timeout-docs-b8e1 Hardcoded 30-second timeouts without documentation or configurability. Automated Checks✅ No GitHub Actions workflow files modified SummaryStatus: 7 of 13 originally reported issues resolved. 6 issues remain unresolved (2 medium, 4 low severity). Critical priorities:
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